Hello. I'm hoping someone can help me with this, 'cause I'm pretty much out of ideas.... This is actually in regards to my brother's computer. He called me up looking for a solution and just lost internet access today, so I'm posting this on his behalf. Anyway, here's the problem. His computer posts fine, but is unable to boot into windows. He's running Windows XP Home Edition (SP2 I believe). Whenever he tries, it hangs on a blank screen. He is also unable to boot into safe mode, using any option (last known good configuration, vga mode, etc.) I had him try an ubuntu live cd, which worked fine, no trouble at all. It turns out the problem started when he tried to install a modem driver. According to what he said, the installation appeared to get about half way through and either lock up, or the progress bar just vanished with no further messages. After that, his computer would no longer boot. So I had him load his windows xp cd and do a repair installation, which also didn't help. And it turns out that when he TRIES to boot into safe mode, and it goes through and lists what's being loaded, it was freezing on vpctcom.sys, which I believe is the driver for his modem. So I had him load his windows xp cd, go into the recovery console, and try disabling vpctcom.sys. Now when he tries to reboot in safe mode, it freezes on ndis.(??? forget whether it was .com or .sys or what). I'm not sure what that does, but I believe it's a core system file...Had him try to disable it in recovery console and reboot anyway (who knows?), but disabling it apparently didn't work as the file is still listed, and the computer still freezes at that point. It appears very much that it's this modem driver that fouled things up. I don't even know if the driver installed completely. And at this point, I don't know what to tell him to do. He tried doing ANOTHER repair installation after disabling vpctcom.sys, just for the heck of it, which failed again. I wondered if he could just install a second copy of windows on another partition and then copy the files he wants off the damaged install, but he just has one big partition on his drive. He could try loading ubuntu, resizing it with gparted (since he's only using about 120 of 200 gb) and then installing a new copy of xp on the new partition, but as he really, really doesn't want to lose any data and shrinking a partition can be a dangerous proposition, he doesn't want to risk it. He currently has no internet connection, no recovery cds like ubcd, bart's pe, etc...Just an ubuntu live cd. No other hard drives, nothing. So what can he do, bearing in mind that he has no internet connection, only the ubuntu cd, and his xp cd to work with, and only one hard drive/one computer? I wrote this hastily, so I don't know if I left anything out or not. But thanks a lot to whoever gets this one figured out ;-).